Nsk bearing motor produces rust are complex and may be bearing rust handled properly, water may be caused by corrosion, and corrosion caused by the mist. Most electrical insulation used in paint factories out of the acid volatile There are four main components: ① the reaction of low molecular weight did not paint the acid composition (anhydrous different o-and p-phthalic acid, anhydrous maleic acid, trans- maleic acid). ② paint curing the resulting acid composition (phenolic degeneration paint,